YDNA IP37 surname Gutierrez - Mystery

Happy early New Year! primos from Jalisco Posting this in case members have clues on some deadends in my Jalisco genealogy. This is my dad's side of the house. He passed away this past summer but I had his DNA completed. Y DNA: IP37 and surname: Gutierrez.

The earliest documented ancestor I found on his dad's paternal side is Victor Gutierrez (1810-?) married to Vicenta Vasquez (1820-?) both from Comanjo Jalisco. Their child, Modesto Gutierrez (1845-1897) was then born in Cieneguilla, Aguascalientes and eventually married Zenona Gutierrez (1850-?) from San Marcos Guerrero I believe). Their child was Juan Gutierrez (1876-1930) who later married Maria Cipriana Tabarez (1880-1930) both from Aguascalientes and their son was my dad's paternal GF, Felipe Gutierrez (1899-1965), also born in Aguascalientes.

What is interesting is that my dad's Y DNA is not common in the surname Gutierrez. I could not test his brothers' DNA or any other male relatives as they had all passed away but I tested his sister (my aunt) and they are brother and sister so they had the same parents. Common surnames with this Y DNA is Flores or Valdez de Flores. It is not impossible to have other names but some thoughts could be a relative changed their name. I realize this is a big mystery so I am putting it out there in case any of this sounds remotely familiar.

On a side note, Zenona Gutierrez' family all originate from Jalisco. Although not related to the YDNA side, if anyone has any relatives you can share - her parents were Josef V Gutierrez and Urbana Diaz (circa 1800). It appears Josef's parents were Vizente Gutierrez (1766) and Maria Josefa Aguilera (1778).

Thanks for any help!